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EP 3 679 202 B1 |
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EUROPEAN PATENT SPECIFICATION |
| (45) |
Mention of the grant of the patent: |
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07.12.2022 Bulletin 2022/49 |
| (22) |
Date of filing: 05.09.2018 |
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| (51) |
International Patent Classification (IPC):
|
| (86) |
International application number: |
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PCT/US2018/049542 |
| (87) |
International publication number: |
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WO 2019/050946 (14.03.2019 Gazette 2019/11) |
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METAL BAFFLES
METALLLEITBLECHE
DÉFLECTEURS MÉTALLIQUES
|
| (84) |
Designated Contracting States: |
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AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL
NO PL PT RO RS SE SI SK SM TR |
| (30) |
Priority: |
06.09.2017 US 201715696597
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| (43) |
Date of publication of application: |
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15.07.2020 Bulletin 2020/29 |
| (73) |
Proprietor: USG Interiors, LLC |
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Chicago, IL 60661-3676 (US) |
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| (72) |
Inventors: |
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- UNDERKOFLER, Abraham M.
Salem, Wisconsin 53168 (US)
- GULBRANDSEN, Peder J.
Aurora, Illinois 60503 (US)
- PAULSEN, Mark R.
Waukegan, Illinois 60087 (US)
- CAROLUS, Kyle S.
Guelph, Ontario N1E 5K9 (CA)
|
| (74) |
Representative: Findlay, Alice Rosemary |
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Reddie & Grose LLP
The White Chapel Building
10 Whitechapel High Street London E1 8QS London E1 8QS (GB) |
| (56) |
References cited: :
DE-U1- 9 310 494 FR-A- 2 971 524
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DE-U1- 20 107 617 GB-A- 2 026 077
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| Note: Within nine months from the publication of the mention of the grant of the European
patent, any person may give notice to the European Patent Office of opposition to
the European patent
granted. Notice of opposition shall be filed in a written reasoned statement. It shall
not be deemed to
have been filed until the opposition fee has been paid. (Art. 99(1) European Patent
Convention).
|
BACKGROUND OF THE INVENTION
[0001] The invention relates to acoustical baffles and for clips for suspending the baffles.
PRIOR ART
[0002] Acoustical baffles are used to absorb noise in enclosed occupied spaces. A common
type of baffle is fabricated from sheet metal formed into an elongated panel or shaft
of U-shaped cross-section. The sheet metal can be perforated to improve sound absorption
and sound absorbing material can be positioned in the interior of the baffle. Acoustical
baffles have been suspended on conventional suspended ceiling grid in so-called "open
plenum" spaces and have been suspended directly from cables.
[0003] There is a need for systems and componentry that afford strong suspended assemblies
capable of resisting wind loads or other disturbances without a need for separate
fasteners. Suspension clip components should be inexpensive to manufacture and allow
for baffle suspension from planar, inclined or curved ceiling grid as well as directly
from overhead vertical cable.
[0004] De 20107617 U1 discloses a clip for suspending an elongated U-shaped sheet metal
baffle comprising a stamped sheet metal body, the body having a U-shaped configuration
that is inverted in use, the body having a central generally horizontal web and two
generally vertical, mutually parallel flanges depending from the web, each flange
having ends with a slot at each end, each slot having a generally right angle shape,
the slots of one flange being aligned with the slots of the other flange on lines
perpendicular to the flanges, each slot being adjacent the web, open at an end of
a respective flange, extending horizontally inwardly adjacent the web and downwardly
away from the web at a distance from the flange end, the web having ends extending
longitudinally beyond the downward portions of an adjacent pair of flange slots whereby
said web ends serve to vertically restrain right angle shaped flanges at upper ends
of U-shaped baffles.
SUMMARY OF THE INVENTION
[0005] The invention is defined by the claims.
[0006] The invention provides a baffle geometry and complementary suspension clip that achieves
high separation force resistance without supplemental fasteners. The disclosed clip
can be arranged to attach to ceiling grid in transverse or other orientations and
can be arranged on inclined or vertically curved grid runners while allowing the baffle
to hang in a vertical orientation. Additionally, the clip can be carried directly
on vertical suspension cable or wire.
[0007] The disclosed baffle is characterized by mounting flanges that interlock with complementary
slots on the suspension clip. The geometries of the baffle flanges and clip slots
are highly resistant to separation when the baffle is subjected to lateral forces.
[0008] The disclosed clip in one arrangement is assembled with a grid tee connector preferably
with a pivot joint for transverse or parallel relation between the baffle and supporting
grid tee. The connector has a low profile that allows the baffle and clip to be used
in installations where the supporting grid tees also carry ceiling tile. In another
arrangement, the baffle clip and grid tee connections are joined with an intermediate
horizontal pin joint that with two other pivot joints gives the clip three degrees
of freedom, enabling the clip to connect with an inclined grid member while allowing
the baffle to hang in a vertical orientation.
BRIEF DESCRIPTION OF THE DRAWINGS
[0009]
FIG. 1 is an exploded perspective diagrammatic view of a ceiling grid, ceiling tile,
acoustical baffle and a clip assembly of the invention;
FIG. 2 is a perspective view of a clip element of the invention used in the clip assembly
of FIG. 1 and in other arrangements;
FIG. 3 is a perspective view of a clip assembly of the invention having three axes
of freedom;
FIG. 4 is an elevational view of the clip of FIG. 3;
FIG. 5 is a diagrammatic view of a baffle arrangement in which the clip of FIG. 3
is used;
FIG. 6 is a perspective view of a clip not forming part of the invention for joining
intersecting baffles;
FIG. 7 is an edge view of a long side of the clip of FIG. 6; and
FIG. 8 is a perspective view of intersecting baffles joined by the clip of FIG. 6.
DESCRIPTION OF THE PREFERRED EMBODIMENT
[0010] In the foreground of FIG. 1 is shown a sheet metal clip assembly 10 comprising a
unitary baffle support clip or part 11 and a unitary grid tee engaging clip or part
12. The parts 11 and 12 are pivotally joined together by a metal rivet 13. A portion
of an acoustical baffle 14 is shown in the background at the right in FIG. 1. Portions
of a grid tee 16 and ceiling tile 17 supported on the grid tee are shown in the background
on the left in FIG. 1.
[0011] FIG. 2 illustrates the baffle suspending clip part 11 which has an inverted U-shape
with depending parallel legs or flanges 18 and a central rectangular web 19. The web
19 has a central circular raised embossment 21 with a central hole 22. Small holes
23 for fastening screws are stamped in adjacent ends of the web 19. At tops of the
ends of both legs 18 are stamped L-shaped slots 24. Each of the four slots 24 have
a horizontal portion 26 open to the end of the clip and a blind vertical portion 27
extending downwardly from the horizontal portion. The web 19, at each end of the clip
11 extends over a space defined by an imaginary projection of opposed slots 24. Holes
28 in the legs 18 can be used to suspend cables, tie straps or the like.
[0012] The unitary grid tee clip part 12 has a generally rectangular profile in plan view.
A centered circular embossed depression 29 has a central hole 31. Ends of the clip
12 are diagonally symmetrical with a bent over tab 32 at one edge and a short bent
up tab 33 on an opposite edge. A slot 34 is cut in the body of the clip 12 to form
a cantilevered spring arm 36 on each end of the clip 12. Each arm 36 extends from
adjacent a free end of the bent over tab 32 and resiliently supports the bent up tab
33 in the illustrated position. Fastener receiving holes 37 are formed adjacent a
base of each spring arm 36. Heads of fasteners, such as self-tapping sheet metal screws
located in the holes 37 have sufficient clearance provided by the embossments 27,
21 to allow the parts to pivot relative to one another.
[0013] The clip assembly 10 can be installed on a conventional grid tee 16 by initially
misaligning it counter-clockwise looking down relative to the grid tee so that the
grid tee flange passes between the bent over tabs 32 when the assembly is raised against
a flange 38 of the tee 16. The spring arms 36 and tabs 33 are temporarily deflected
downwardly relative to the clip proper as the clip is pushed up against the flange
38. The clip 12 is then rotated clockwise so that the bent over tabs 32 grip the top
of the flange 38 and the bent up tabs 33 snap up at the edge of the flange to thereby
lock the clip 12 on the grid tee 16. In severe service applications, the clip 12 can
be fixed to the grid tee 16 by driving self-tapping screw fasteners through the holes
37 into the flange 38.
[0014] The bent over tabs 32 and the bent up tabs 33 have low profiles and do not extend
appreciably above the grid tee flange 38. This is a benefit when ceiling tiles 17
are used in combination with the baffles 14. A bent over tab 32 lies flat against
the top side of the flange 38 so that it only raises a ceiling tile locally above
the flange a distance essentially equal to the thickness of the sheet metal from which
it is made.
[0015] The acoustical baffle 14 of the invention is typically roll formed or press brake
formed from an elongated strip of sheet metal into a U-shaped cross-section. The illustrated
cross-section is rectangular but other U-shaped forms, such as V-shapes and rounded
shapes are contemplated. By way of example the baffle can be 1-1/2 inch wide and 4
inch or 6 inch deep with a length of 12, 10, 8, 6, 4, and 2 feet. Upstanding or vertical
walls 41 of the baffle 14 are characterized by inturned flanges 40 having a horizontal
part 42 extending from a wall 41 and a depending vertical part 43 extending downwardly
from the respective horizontal part and terminating at a longitudinal edge of the
sheet material from which a baffle 14 is made.
[0016] The baffle flanges 40 are proportioned to slide endwise through the clip slots 24.
A strong connection between the clip 11 and a baffle 14 is formed when the flanges
38 are received in both sets of the clip slots 24. The connection is highly resistant
to lateral forces on the baffle 14 because the vertical flange parts 43 resist lateral
pull out by engagement with the vertical portions 27 of the slots 24 and the web 19
of the clip 11 restrains the horizontal part 42 of the baffle flange 40 against upward
movement.
[0017] Where the grid tee engaging part 12 is rotated 90 degrees relative to the baffle
support part 11 from the position illustrated in FIG. 1, self-tapping screws can be
driven through the preformed holes 23 into the baffle horizontal flange parts 42 to
augment the strength of the connection between the clip 11 and baffle 14.
[0018] In the view of FIG. 1 the baffle 14 is transverse to the grid tee 16. The baffle
14 can be supported in parallel relation to the grid tee 16 when the grid tee clip
12 is rotated 90 degrees relative to the baffle supporting part or clip 11. Moreover,
the clip 11 can be oriented at other angles, enabling the baffle 14 to be supported
diagonally relative to a grid tee 16.
[0019] FIGS. 3 and 4 illustrate a modified form of clip assembly 50. The baffle support
clip 11 and grid tee engaging clip 12 are structurally and functionally identical
to those described above as they interact with a baffle and grid tee. The clip assembly
50 affords two additional axes of freedom obtained by a pivot joint 51 interposed
between the parts 11, 12. The pivot joint 51 is made by a pair of preferably identical
U-shaped sheet metal brackets 52 pivotally joined by a rivet 53. The rivet 53 is assembled
through holes 54 in each bracket leg 56. Webs 57 have holes 58 for receiving associated
rivets 13 assembled through respective holes in the baffle support clip 11 and grid
tee engaging clip 12. The rivets are set loose enough to allow relative pivotal movement
of the parts in which they are assembled. The center axis of the rivet or pin 53 is
perpendicular to the center axes of the other rivets 13.
[0020] The clip assembly 50, for example, allows a baffle 14 to be suspended in a vertical
orientation from an inclined grid tee 16 as shown in FIG. 5 or a grid tee that is
curved in a vertical plane where the baffle 14 is transverse to the grid tee.
[0021] The baffle support clip 11 and a baffle 14 with which it is assembled can be suspended
directly by a cable or rod having an end fitting and threaded through the central
hole 22.
[0022] FIGS. 6, 7 and 8 illustrate a stamped sheet metal clip 60 useful for joining intersecting
baffles 14 of the disclosed type. The clip 60 has an elongated rectangular profile
in plan view with a width slightly narrower than the width of a baffle and a length
exceeding three times its width. The clip 60 is symmetrical about its mid-length having
a center section 61 and end sections 62 on opposite edges of the center section. The
center section 61 has a pair of depending tabs 63. The tabs 63 are in planes parallel
to the lengthwise direction of the clip 60 and are aligned with each other on a line
transverse to the length of the clip. Vertical edges 64 on each tab 63 are spaced
to provide a close fit with opposed vertical flange parts 43 of a baffle 14. The two
tabs 63 when positioned in the top of a baffle 14 make the clip 60 self-aligning to
the baffle in a direction transverse to the baffle. Holes 66 are located to overlie
the horizontal flange parts 42 and receive self-tapping screws driven into the flange
to securely fix the clip 60 to the transverse baffle 14. Each end section 62 includes
a pair of depending longitudinally spaced and aligned tabs 67. The width of the tabs
67 is the same as the spacing of the faces of the vertical parts 43 of the baffle
flanges 38 so that when inserted in the top of a baffle 14, they index or align the
clip 60 and baffle. Holes 68 for self-tapping screws are located to overlie the horizontal
parts 42 of the baffle flanges 40. The screws lock the clip 60 on a baffle oriented
in the longitudinal direction of the clip 60. Slots 71 are cut out of the clip body
at the transverse junction of each end section 62 and the center section 61. The clip
is slightly offset along the line of the slots 71 so that the end sections 62 are
slightly higher, for example, 1/32 inch, than the center section 61.
[0023] FIG. 8 illustrates an intersection between two baffles joined by the clip 60. The
clip center section 61 overlies a "through" baffle 14 and an end section 62 overlies
a cross baffle 14 abutting the through baffle. The clip 60 secures the baffles 14
together in abutting relation with screws driven through the holes 66, 68 into the
underlying baffle flanges 38.
[0024] Where another cross baffle 14 is to be installed at the same location along the through
baffle 14 in line with the illustrated baffle on the opposite side of the through
baffle, it is secured with the clip in the manner described. Where only one cross
baffle 14 is to be used at the same location, one of the end sections 62 is cut off
at the slots 71. The slight elevation of a side section 62 above the center section
61 serves to hold a cross baffle 14 slightly higher than the through baffle 14. This
avoids a gap at the bottom of the cross baffle which would otherwise occur if the
baffle bottoms were at the same level due to the radius of the bend of the sheet material
where the bottom and side of the through runner meet.
[0025] While the invention has been shown and described with respect to particular embodiments
thereof, this is for the purpose of illustration rather than limitation, and other
variations and modifications of the specific embodiments herein shown and described
will be apparent to those skilled in the art. The invention is defined by the appended
claims.
1. In combination, an elongated baffle (14) and a suspension clip (11), the baffle having
a U-shaped cross-section including spaced generally vertically extending sidewalls,
an upper edge of each sidewall having inwardly directed flanges (40), the suspension
clip (11) having an inverted U-shape body, including a horizontal web (19) and depending
flanges (18) at opposite sides of the web (19), the flanges (18) each having opposed
ends and a slot (24) at each end adjacent the web, each slot (24) extending generally
horizontally inwardly from the associated flange end the flanges of the baffle being
disposed in the slots (24) of the clip (11), the web (19) at each end of the clip
(11) overlying a respective flange (40) of the baffle and confining a respective flange
(40) to the slot (24), characterized in that the baffle flanges (40) have a horizontal portion (42) adjacent a respective sidewall
and a vertical portion (43) spaced from the respective sidewall and depending from
the horizontal portion (42),and in that each slot (24) of the clip flanges (18) extends to a vertical slot, the vertical
slot extending downwardly away from the web (19).
2. The combination of claim 1, wherein said web (19) has a central hole (22) enabling
the clip to be suspended by an element (13) extending upwardly through said hole.
3. The combination of claim 2, wherein said clip (11) is attached to a grid tee engaging
clip (12) by a rivet (13) comprising said element.
4. A clip assembly (50) comprising a baffle engaging clip (11) joined to a grid tee engaging
clip (12), the baffle engaging clip (11) being constructed and arranged to support
a U-shaped acoustical baffle (14) having inturned flanges (40) at upper ends of generally
vertical sidewalls by engaging undersides of the sidewall flanges, the baffle engaging
clip (11) comprising a stamped sheet metal body, the body having a U-shaped configuration
that is inverted in use, the body having a central generally horizontal web (19) and
two generally vertical, mutually parallel flanges (18) depending from the web, each
flange (18) having ends with a slot (24) at each end, each slot (24) having a generally
right angle shape, the slots (24) of one flange being aligned with the slots of the
other flange on lines perpendicular to the flanges, each slot (24) being adjacent
the web (19), open at an end of a respective flange (18), extending horizontally inwardly
adjacent the web (19) and downwardly away from the web (19) at a distance from the
flange end, the web (19) having ends extending longitudinally beyond the downward
portions of an adjacent pair of flange slots (24) whereby said web ends serve to vertically
restrain right angle shaped flanges at upper ends of U-shaped baffles, the grid tee
engaging clip (12) being constructed and arranged to support the baffle engaging clip
(11) by engaging upper sides of a grid tee flange, characterized in that the baffle engaging clip (11) and the grid tee engaging clip (12) are joined by a
bracket assembly having one part (52) pivotally connected to the baffle engaging clip
about a first axis, a second part (52) pivotally connected to the grid tee engaging
part about a second axis, the first and second parts (52) being pivotally connected
together about a third axis perpendicular to both said first and second axes.
5. A clip assembly as set forth in claim 4, including a central hole (22) in the web
(19) for suspending the clip.
6. A clip assembly as set forth in claim 5, including a rivet (13) in the central hole
connecting the clip body to the grid engagement clip (12).
7. A clip assembly as set forth in claim 5, including a rivet in a hole connecting to
one of a pair of U-shaped mutually pivoting parts, the other of the pair of mutually
pivoting parts being connected to the grid tee engaging clip.
8. A clip assembly as set forth in claim 4, wherein the baffle engaging clip flanges
have aligned holes.
1. In Kombination, ein längliches Leitblech (14) und eine Aufhängungsklammer (11), wobei
das Leitblech einen U-förmigen Querschnitt aufweist, einschließlich beabstandeter,
allgemein sich vertikal erstreckender Seitenwände, wobei eine Oberkante jeder Seitenwand
nach innen gerichtete Flansche (40) aufweist, wobei die Aufhängungsklammer (11) einen
invertierten U-förmigen Körper, einschließlich eines horizontalen Stegs (19) und abhängiger
Flansche (18) an gegenüberliegenden Seiten des Stegs (19) aufweist, wobei die Flansche
(18) jeweils gegenüberliegende Enden und einen Slot (24) an jedem Ende angrenzend
an den Steg aufweisen, wobei jeder Slot (24) sich allgemein horizontal nach innen
von dem zugehörigen Flanschende der Flansche des Leitblechs erstreckt, die in den
Slots (24) der Klammer (11) angeordnet sind, wobei der Steg (19) an jedem Ende der
Klammer (11) über einem jeweiligen Flansch (40) des Leitblechs liegt, und einen jeweiligen
Flansch (40) in dem Slot (24) einengt, und dadurch gekennzeichnet, dass die Leitblechflansche (40) einen horizontalen Abschnitt (42) angrenzend an eine jeweilige
Seitenwand und einen vertikalen Abschnitt (43) aufweisen, der von der jeweiligen Seitenwand
und abhängig von dem horizontalen Abschnitt (42) beabstandet ist, und wobei sich jeder
Slot (24) der Klammerflansche (18) zu einem vertikalen Slot erstreckt, wobei sich
der vertikale Slot von dem Steg (19) nach unten weg erstreckt.
2. Kombination nach Anspruch 1, wobei der Steg (19) ein zentrales Loch (22) aufweist,
das es der Klammer ermöglicht, durch ein Element (13) aufgehängt zu werden, das sich
durch das Loch nach oben erstreckt.
3. Kombination nach Anspruch 2, wobei die Klammer (11) durch einen Niet (13) an einer
Gitter-T-Eingriffsklammer (12), umfassend das Element, befestigt ist.
4. Klammeraufbau (50), umfassend eine Leitblech-Eingriffsklammer (11), die an einer Gitter-T-Eingriffsklammer
(12) angeschlossen ist, wobei die Leitblech-Eingriffsklammer (11) konstruiert und
angeordnet ist, um ein U-förmiges akustisches Leitblech (14), das eingedrehte Flansche
(40) an oberen Enden von allgemein vertikalen Seitenwänden aufweist, durch Ineingriffnehmen
von Unterseiten der Seitenwandflansche, zu stützen, die Leitblech-Eingriffsklammer
(11) umfassend einen gestanzten Blechkörper, wobei der Körper eine U-förmige Konfiguration
aufweist, die in Verwendung invertiert ist, wobei der Körper einen zentralen allgemein
horizontalen Steg (19) und zwei allgemein vertikale, zueinander parallele Flansche
(18) aufweist, die von dem Steg hängen, wobei jeder Flansch (18) Enden mit einem Slot
(24) an jedem Ende aufweist, jeder Slot (24) eine allgemein rechtwinklige Form aufweist,
wobei die Slots (24) eines Flansches mit den Slots des anderen Flansches auf senkrechten
Linien zu den Flanschen ausgerichtet sind, wobei jeder Slot (24) an den Steg (19)
angrenzend, an einem Ende eines jeweiligen Flansches (18) offen ist, der sich horizontal
nach innen angrenzend an den Steg (19) erstreckt und nach unten, weg von dem Steg
(19) mit einem Abstand von dem Flanschende, der Steg (19), Enden aufweist, die sich
in Längsrichtung über die nach unten gerichteten Abschnitte eines angrenzenden Paares
von Flanschslots (24) erstrecken, wodurch die Stegenden dazu dienen, rechtwinklig
geformte Flansche an oberen Enden von U-förmigen Leitblechen vertikal einzuschränken,
wobei die Gitter-T-Eingriffsklammer (12) konstruiert und angeordnet ist, um die Leitblech-Eingriffsklammer
(11) durch Ineingriffnehmen von oberen Seiten eines Gitter-T-Eingriffsflansches zu
tragen, dadurch gekennzeichnet, dass die Leitblech-Eingriffsklammer (11) und die Gitter-T-Eingriffsklammer (12) durch
einen Halterungsaufbau angeschlossen sind, der einen Teil (52), der mit der Leitblech-Eingriffsklammer
um eine erste Achse schwenkbar verbunden ist, einen zweiten Teil (52), der dem Gitter-T-Eingriffsteil
um eine zweite Achse schwenkbar verbunden ist, aufweist, wobei der erste und der zweite
Teil (52) um eine dritte Achse senkrecht zu sowohl der ersten als auch der zweiten
Achse schwenkbar miteinander verbunden sind.
5. Klammeraufbau nach Anspruch 4, einschließlich eines zentralen Lochs (22) in dem Steg
(19) zum Aufhängen der Klammer.
6. Klammeraufbau nach Anspruch 5, die eine Niet (13) in dem zentralen Loch einschließt,
das den Klammerkörper mit der Gitter-T-Eingriffsklammer (12) verbindet.
7. Klammeraufbau nach Anspruch 5, einschließlich einer Niet in einem Loch, die mit einem
Paar von U-förmigen zueinander schwenkbaren Teilen verbunden ist, wobei das andere
des Paares von zueinander schwenkbaren Teilen mit der Gitter-T-Eingriffsklammer verbunden
ist.
8. Klammeraufbau nach Anspruch 4, wobei die Leitblech-Eingriffsklammerflansche ausgerichtete
Löcher aufweisen.
1. En combinaison, un déflecteur allongé (14) et une attache de suspension (11), le déflecteur
ayant une section transversale en forme de U incluant des parois latérales espacées
s'étendant généralement verticalement, un bord supérieur de chaque paroi latérale
ayant des collerettes dirigées vers l'intérieur (40), l'attache de suspension (11)
ayant un corps en forme de U inversé, incluant une bande horizontale (19) et des collerettes
dépendantes (18) au niveau de côtés opposés de la bande (19), les collerettes (18)
ayant chacune des extrémités opposées et une fente (24) au niveau de chaque extrémité
à proximité de la bande, chaque fente (24) s'étendant généralement horizontalement
vers l'intérieur depuis l'extrémité de collerette associée, les collerettes du déflecteur
étant disposées dans les fentes (24) de l'attache (11), la bande (19) au niveau de
chaque extrémité de l'attache (11) recouvrant une collerette (40) respective du déflecteur
et confinant une collerette (40) respective sur la fente (24), caractérisé en ce que les collerettes (40) de déflecteur ont une partie horizontale (42) à proximité d'une
paroi latérale respective et une partie verticale (43) espacée de la paroi latérale
respective et en fonction de la partie horizontale (42), et en ce que chaque fente (24) des collerettes d'attache (18) s'étend jusqu'à une fente verticale,
la fente verticale s'étendant vers le bas à l'écart de la bande (19).
2. Combinaison selon la revendication 1, dans laquelle ladite bande (19) a un trou central
(22) permettant à l'attache d'être suspendue par un élément (13) s'étendant vers le
haut à travers ledit trou.
3. Combinaison selon la revendication 2, dans laquelle ladite attache (11) est fixée
à une attache de mise en prise de té de grille (12) par un rivet (13) comprenant ledit
élément.
4. Ensemble attache (50) comprenant une attache de mise en prise de déflecteur (11) jointe
à une attache de mise en prise de té de grille (12), l'attache de mise en prise de
déflecteur (11) étant construite et disposée pour supporter un déflecteur acoustique
en forme de U (14) ayant des collerettes (40) tournées vers l'intérieur au niveau
des extrémités supérieures de parois latérales généralement verticales en entrant
en prise avec des faces inférieures des collerettes de paroi latérale, l'attache de
mise en prise de déflecteur (11) comprenant un corps de tôle estampé, le corps ayant
une configuration en forme de U qui est inversé lors de l'utilisation, le corps ayant
une bande horizontale généralement centrale (19) et deux collerettes généralement
verticales, mutuellement parallèles (18) en fonction de la bande, chaque collerette
(18) ayant des extrémités dotées d'une fente (24) au niveau de chaque extrémité, chaque
fente (24) ayant une forme d'angle généralement droit, les fentes (24) d'une collerette
étant alignées sur les fentes de l'autre collerette sur des lignes perpendiculaires
aux collerettes, chaque fente (24) étant à proximité de la bande (19), ouverte au
niveau d'une extrémité d'une collerette respective (18), s'étendant horizontalement
vers l'intérieur à proximité de la bande (19) et vers le bas à l'écart de la bande
(19) au niveau d'une distance de l'extrémité de collerette, la bande (19) ayant des
extrémités s'étendant longitudinalement au-delà des parties vers le bas d'une paire
adjacente de fentes de collerette (24) moyennant quoi lesdites extrémités de bande
servent à retenir verticalement des collerettes en forme d'angle droit au niveau d'extrémités
supérieures de déflecteurs en forme de U, l'attache de mise en prise de té de grille
(12) étant construite et disposée pour supporter l'attache de mise en prise de déflecteur
(11) en entrant en prise avec les côtés supérieurs d'une collerette en té de grille,
caractérisé en ce que l'attache de mise en prise de déflecteur (11) et l'attache de mise en prise de té
de grille (12) sont jointes par un ensemble de support ayant une partie (52) reliée
de manière pivotante à l'attache de mise en prise de déflecteur autour d'un premier
axe, une seconde partie (52) reliée de manière pivotante à la partie de mise en prise
de té de grille autour d'un deuxième axe, les première et seconde parties (52) étant
reliées de manière pivotante ensemble autour d'un troisième axe perpendiculaire à
la fois auxdits premier et deuxième axes.
5. Ensemble attache selon la revendication 4, incluant un trou central (22) dans la bande
(19) pour suspendre l'attache.
6. Ensemble attache selon la revendication 5, incluant un rivet (13) dans le trou central
reliant le corps d'attache à l'attache de mise en prise de grille (12).
7. Ensemble attache selon la revendication 5, incluant un rivet dans un trou se reliant
à l'une d'une paire de parties pivotantes mutuellement en forme de U, l'autre de la
paire de parties pivotantes mutuellement étant reliée à l'attache de mise en prise
de té de grille.
8. Ensemble attache selon la revendication 4, dans lequel les collerettes d'attache de
mise en prise de déflecteur ont des trous alignés.